National Excelsior

National Excelsior is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Heating Units Manufacturers & Distributors

North American Industry Classification System (NAICS) Categories:

• Air-Conditioning And Warm Air Heating Equipment And Commercial And Industrial Refrigeration Equipment Manufacturing > Heating Equipment

Standard Industry Classification (SIC) Categories:

• Refrigeration & Heating Equipment > Heating Equipment
• Warm Air Heating & Air Conditioning > Stoves & Furnaces Equipment > Furnace Fittings & Repair Parts